Watertown Boys & Girls Club 25 Whites Ave, Watertown, MA02472 The Boys & Girls Club provides after-school activities for school children in Watertown. The club is open to…More children ages 7 to 18. The club has a gym and a pool where swimming lessons are offered. The pool is also open for adult swimming on weekdays. The club also runs basketball and indoor soccer programs. There is also a computer lab for members to do homework. Other classes, including painting, are offered.